The SWR LED scaling on the KPA500 is different than the scaling on the KAT500. Yet the KPA500 does have a numerical readout......if one wishes to split hairs. 1.0, 1.1, 1.2, 1.3 and etc.
With LED type displays, there is always a "transition" point from one value / LED to the next. It could be at 1.4, or 1.5 or 1.6. Thus a value of 1.4 on one device could be 1.6 on another. Bob, K4TAX Sent from my iPhone > On Apr 6, 2019, at 3:13 PM, Bill Johnson <[email protected]> wrote: > > Does the power output LEDs give a reading? If they do and you show no > reflected that should be ok. If you have a bride after that it may show no > lite either. You can always bypass the KPA's and find a frequency where you > see 2:1 then turn the KPA's back on and see if that gives a reading. If not, > suggest you call tech support. > > 72 & 73, > Bill > K9YEQ > FT'er for K2, KX1, KX3, KXPA100, KAT500, W2, etc. > > -----Original Message----- > From: [email protected] <[email protected]> On > Behalf Of wmbrian > Sent: Saturday, April 6, 2019 1:02 PM > To: [email protected] > Subject: [Elecraft] KAT500 SWR LED Doesn't Light with 1.0/1 SWR > > I recently added the KAT500 and KPA500 to my K3 station. > > I have noticed that when the SWR (after tuning) as displayed on the KPA500 > is 1.0/1 (or occasionally 1.1/1) no SWR LED lights up on the KAT500. (The > green 1.0/1 SWR LED on the KPA500 does light up.) > > I have assumed that the 1.2/1 KAT500 SWR LED does not light up is because 1) > the KAT500 threshold for the first SWR LED is 1.2/1 and 2) because no tuning > action has taken place in these circumstances (due to memorized > KAT500 tuning configuration). However, I noticed at the bottom of page 49 of > Fred Cady's book on the KAT500 and the KPA500 it says "VSWR is displayed even > when the tuner is bypasssed". So, I'm confused. Does no SWR LED light when > the SWR is 1.0/1 (or very close to it) because the SWR is below 1.2/1? > > Thanks, > > Brian, K8GRR > > > > -- > Sent from: http://elecraft.365791.n2.nabble.com/ > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
